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1. Oxford American Dictionary

   sustained yield

   • IPA[səˈstānd yēld]

   • n.
     a level of exploitation or crop production which is maintained by restricting the quantity harvested to avoid long-term depletion

   • noun: sustained yield

2. • 釋義

   n.

   名詞

   • 1. a level of exploitation or crop production which is maintained by restricting the quantity harvested to avoid long-term depletion stocks of fish were exploited far beyond levels of sustained yield productive forests managed on a sustained-yield basis